00710nam0-22002651i-450 99000204152040332120241217130827.000020415220030910d1979----km-y0itay50------baengUSa s001yyBumblebee economicsBernd HeinrichCambridgeHarvard University1979245 p., 1 tv.24 cmImenotteriApoidea595.7923itaHeinrich,Bernd86899ITUNINARICAUNIMARCBK990002041520403321B ENT 7901/0079/25FAGBCFAGBCBumblebee economics407017UNINA